// Copyright (C) 1998-2008, Sumisho Computer Systems Corp. All Rights Reserved.

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/**
 * @author Hitoshi Okada
 */

package com.curlap.orb.context;

import java.util.Enumeration;
import java.util.Vector;
import javax.servlet.ServletContext;

/**
 * ServletApplicationContext
 */
public class ServletApplicationContext extends AbstractApplicationContext 
{
    private ServletContext context;

    // constructors
    public ServletApplicationContext(ServletContext context)
    {
        this.context = context;
    }

    @Override
    public Object getObject(String name) throws ApplicationContextException
    {
        return context.getAttribute(name);
    }

    @Override
    public void setObject(String name, Object value) throws ApplicationContextException
    {
        context.setAttribute(name, value);
    }

    @Override
    public String[] getObjectNames() throws ApplicationContextException
    {
        Enumeration<String> names = context.getAttributeNames();
        Vector<String> vector = new Vector<String>();
        while (names.hasMoreElements())
        {
            vector.addElement((String)names.nextElement());
        }
        String[] array = new String[vector.size()];
        vector.copyInto(array);
        return array;
    }

    @Override
    public Class getObjectType(String name) throws ApplicationContextException
    {
        return context.getAttribute(name).getClass();
    }
}
